Flush-valve.



P. GRABLER. FLUSH VALVE."

APPLICATION FILED TBB. 24, 1908.

Patented Apr. 26, 1910.

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UNITED sTATEs 4PATENT OFFICE.

PETER GRABLER, OF CLEVELAND, OHIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGN- MENTS, TO THE CLEVELAND FLUSHOMETER COMPANY, OF CLEVELAND, OHIO.

FLUSH-VALVE.

Specification of Letters Patent.

Patented Apr. 26, 1910.

Application filed February 24, 1908. Serial No. 417,336.

v, To all whom 'it may concern:

Be it known that I, PETER GRABLER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Flush-Valves, of which the following is a specification.

This invention relates broadly to flushing devices and is adapted particularly for use in connection with the flush pipe and may be used with or without a tank.

More specifically the invention relates to a suitable valve for controlling the flow of water to the bowl and provided with suitable means suspended in the valve casing and arranged to expand and return the valve to its seat after a predetermined period of operation or after a certain quantity of water has passed into the bowl for the flushing operation.

The invention may be further briefly summarized as consisting in the construction and combination of parts hereinafter set forth in the drawings, specification and claims.

Referring to the drawings Figure 1 is a general view showing the tank, the supply, the flush valve, the bowl and connections therewith; Fig. 2 is a section taken vertically through the flush valve; Fig. 3 is a sectional view throuvh the inlet member showing the rod, for dividing the incoming sti-cam of water, in elevation; and Fig. 4 is a detail sectional view through the relief valve stem.

Any preferred construction and arrangement of parts may be employed inthe carrying out of my invention, but I have shown one form in the drawings which meets the requirements with great efficiency and in such embodiment 1 represents a bowl of ordinary construction, 2 the connection leading from the valve easing 3 to the bowl and 4 a suitable flush pipe leading from the valve easing 3 to the tank 5. This tank is supplied with Water from a suitable supply pipe 6 which passes into the tank where it is provided with a goose neck 7 havingits delivery end within the mouth of and adapted to directits stream into the flush pipe 4. The outlet from the goose neck 7 into ,the flush pipe 4 is small enough so that the entire volume of the su ply is directed into the flush pipe 4 whereby the water in the tank 5 will be drawn into the flush pipe and forced into the bowl.

The flush valve consists of the casing 3 preferably made rigid with the connection 2 and having upon one side a suitable inlet connection 8 to which is secured the flush pipe 4. The casing 3 is provided at its upper end with a long straight portion 9 having near its upper end an internal threaded portion adapted to receive a threaded plug 10 which has integral therewith a cylindrical portion 11 extending down into the casing within the portion 9 for a purpose to be described. The exterior surface of the bearing portion 11 is provided with a plurality of small pockets 11 which produce two very important results namely, Vthe decreasing of the bearing surface and the collecting of small quantities of water therein which produces a sort of packing for the joint between the plunger and the cylindrical portion 11 of the plug. The bearing portion 11 of the cylindrical portion is never exposed to the sediment while the remaining part is reduced whereby the collecting of sediment or grit upon it would have no ei'ect whatsoever. The casing 3 is further provided with a valve seat 12 below the inlet connection 8 and it is arranged to receive a main valve 13 carried by the lower end of a plunger 14 which is hollow and open at the end opposite to the valve and is adapted to lit snugly around the bearing portion 11 carried by the pli-ig 10. The bottom of the plunger on the inside is preferably formed into a half oval, as it were, for a purpose to be described. A port 15 is provided in the plunger 14 for the purpose of equalizing the pressure above and below the plunger. The plunger is of a length auch that when the main valve 13 is on its seat the u per edge of the former comes to the edge o the bearing surface of the cylindrical portion l1 so that none of the bearing surface of either the cylindrical portion or the lunger is exposed to sediment or grit. n the bottom of the plunger a suitable relief opening 16 is provided which ern ties out into the connection 2 toward the owl and thc plunger at the upper part of this o ening is provided with a valve seat 17 w ich receives arelief valve 18, the stern 19 of which extends down through the openig 16 and is referably made triangular whereby it wil permit the water to flow around it. The stem 19 extends below the lower face of the plunger and 4is provided with a pin 20 which limits the upward movement of the valve. The casing 3 is still further provided with a housing 21 for an operating device and ,this operating device consists of a shaft 22 passing into the housing and provided with a squared portion 23 carrying thereon an operating lever 24, the end of which projects into the valve casing 3 in a position such that when the lever 1s rocked upward this end engages the stem 1 9 of the relief valve and raises the same, until. the pin 20 engages the under surface of the main valve 13 when a still further movement of the lever will raise this valve also.

The operation of the device is such that when the tank 5 is supplied with water the shaft 22 is rocked so that the end of the lever 24 engages the stem 19, thus raising the relief valve 18 and relieving the pressure of water which has accumulated in the expansion chamber formed by the plunger and thev cylindrical portion 11, so that a further rocking of the lever 24 may raise the plunger and the main valve 13 thus bringing about the flushing operation. As soon as the plunger and the main valve 13 are raised sufficiently to start the flushing operation, the shaft 22 is then released and the lever 24 returns to normal position, but as soon as the end of this lever moves away from the valve stem 19 the relief valve 18 immediately closes by its weight and the plunger carrying the main valve 13 remains suspended until sufiicient water passes through the port 15 to let it return to its normal position. It is quite obvious that a period of t-ime'will be consumed in the plunger and valve returning to normal position in that laterally water will pass in very slowly through the port 15.

In order to prevent the force of the Water from acting directly against the side of the plunger 14, a rod 25 1s mounted vertically across the inlet 8, as shown in Figs. 2 and 3, whereby the stream of water 1s spread in two parts around the sides of the caslng and in a manner to envelop the plunger.

The mechanism for operating the shaft 22 consists of a lever 26 secured to the shaft and carrying a lug 27 adapted to engage the end of a screw 28 carried .by a projection 29 forming a part of the casing 3. It is obvious that the screw may be adjusted so as to vary the upward movement of the lever 24 and hence the extent to which the lunger 14 is raised thereby furnishing suitable means for regulating and determining the period of time required for closing the main valve 13 and hence the extent of the flushing operation. A

Having described my invention, I claim: 1. In` a flush valve, in combination, a casing having inlet and outlet openings, a valve seat within said casing between. the inlet 'said plunger, and means for opening the same and raising said plunger.

2. In a iush valve, 1n combination, a casin having inlet and outlet openings anda cy indrical portion, a valve seat within said casing and between said openings and arranged in alinement with the lcylindrical -portion of the casing, a plug secured in said cylindrical portion and having a cylindrical member projecting into the cylindrical portion of the casing, said cylindrical member being cut away leavin a bearing surface, a plunger engaging sai bearing surface, the

*edge of the bearlng surface of the plunger being Hush with the edge of the bearing surface of the cylindrical member when the valve is closed, said plunger being provided with a port for equalizing the pressure above and belowT the same, a valve carried by said plunger and coperating with said valve seat, and means for raising the `plunger and the valve. 3. In a iush valve, in combination, a casin having inlet and outlet openings and a cy indrical portion, a valve seat within said casing between the inlet and outlet openings and in alinement withthe cylindrical portion of said casing, a plug secured in the upper part of the cylindrical portion of the casing and having a'cylindrical member provided externally with an enlarged portion adapted to form a bearing surface, a plunger engaging said bearing surface and havmg itas edge flush with the u per edge of the bearing surface of said4 cyl' indrical. member, said plunger being provided with a port for equalizing the pressure above and below the same, a valve carried by said plunger and adapted to engage said valve seat, and means for raising said valve and said plunger.

,4. In a flush valve, in combination, a cas# ing having a cylindrical member with a bearing surface, a valve within said casing and a plunder for operating said valve and having a earing surface engaging said other bearing surface, one of said surfaces having therein circumferentially isolated pockets for furnishingN a water packing therebetween.

5. In a flush valve, in combination, a casing having a cylindrical portion and an inl let and an outlet opening, a valve seat within said casing between said openings and in alinement 'with said cylindrical portion of the casing, a plug secured in the upper part of the cylindrical portion of the casing and having a cylindrical member projecting into the cylindrical portion of the casing, said member heilig out away leaving a bearing surface, a plunger' having a tubular portion engaging said bearing surface, the bearing surface of one of said arts being provided with oircuinferentially isolated pockets, said plunger being provided with a port for equalizing the pressure above and below the same, a main valve carried by said plunger, a relief valve carried by said plunger', and means for opening the relief valve and rais- 15 ing said plunger and main valve. In testimony whereof I aflix my signature in presence of two witnesses.

PETER GRABLER. Witnesses :A

RAE WEISS, G. O. FARQUHARSON. 

